Our video explains how screen devices produce the colors we see. We introduce a few information of the transition from black and white TVs to colors ones and ask the audience how many colors screen devices are able to reproduce. With three LEDs we demonstrate the RGB additive method and recording cell phones screens under a microscope we show real devices working. Then, we say that a pixel is able to produce around 17 million colors.

I have explained the basic idea to how a DVD drive works, and I have sketched the design for a DVD drive and explained the details for each piece of it. What I have prepared in the video is a basic idea how a DVD drive works, I could not cover all detailed parts because of timing.

In this video I briefly discuss the exciting technology behind Liquid Crystal Displays. I begin by talking about their consumer applications. Then, I discuss the polarization of light with a simple demonstration. Finally, I discuss how the twisted nematic effect is used in display technologies to create an array of pixels at varying degrees of illumination.

We present on the video a laser pointer. It’s a modern product permitting to indicate faraway objects. The idea of the video is to show the interior construction of the pointer to the audience. We want to describe the elements the pointer consists of and demonstrate product’s optical scheme. We saw up the frame of the pointer. We separate gradually different optical elements and describe their importance. In fact we see the edge of the gain media and the mirror deposed on it.

This video shows the basics and importance of security holograms for advertising and anti-counterfeit in several products like pharmaceutical drugs, innovative arts and advertising tickets. We include some videos about the research and manufacture of holograms in Colombia. We explain that holograms by themselves are First level security. This means that only the observation of the hologram give us information about the reliability of any product. We participate as the OSA-Student Chapter UNBOS.

Electronic entertainment is the most extended application of video-projectors. However, they are also used at schools, universities and companies around the world as a tool to give information to people in the fastest and straightforward way known to date: visually. In this video we show how digital video-projectors work and how optics is involved in its functioning by showing its main components: light sources, a spatial light modulator and its optical system.

This video contains an explanation of the working principle of a common flatbed scanner. We used schematic diagrams and animations to explain the internal working properly. We described the main parts, with more emphasis on the optical components.